Samsung Galaxy Note 4 screen remains dark after phone call

If you make ina phone call withyourSamsungGalaxy Note4, it can happen that the display remains darkafter terminating thecall.It is not possible to make any actionsuntilyou haveturned off the smartphonevia the powerbuttonandturned it onagain. Usuallythis error occursafter eachcall.

The reason of thiserroristhe proximity sensorof the SamsungGalaxy Note4.The Samsung Galaxy Note4 uses this sensor during a call to check if your face is near the phone. So thedisplaydoens´t needs to be lit continously during the whole call. Whenthe proximity sensor is coveredor blockedthenit may happenthat the smartphonestays at the status "calling" although you already finished the call.

So now you haveto check whetherthe proximity sensorof your SamsungGalaxy Note4is covered with something. The sensor is locatedright next tothe earpiece. You have tocheck:

- Have youstuckascreen protector?If so, does it covers thesensor? - Is dirtordustin front of thesensor?

If the sensoris covered, then you need tomake it clear.

If you do not find anything, check the values of the sensorvia the servicemenu of yourSamsungGalaxy Note4.This worksas follows:

Navigateintheservicemenuof yourSamsungGalaxy Note4 byopeningthephoneapp andthen enteringthe code *#0*# at the keypad. In the servicemenu,tap at the "Sensor" field. The second entry is called "Proximity Sensor" . The value of "ADC"shouldbeabout 10-15, so that the proximity sensorof yourSamsungGalaxy Note4works properly. A valuesclose to 50indicates aproblemwith dust.

In "proximity" the valueshouldbe "0", since this meansthat the sensorhasnot been triggered. "1" means thatthe sensor istriggeredand activatesfeatures that areassociated with it inAndroid.

If yournote dust under the glass, then you canstill trythe following trick:

It may bethat dustispermeated throughthe earpieceto theproximity sensor andthereforetriggersthis. Take a straw and blow with itinto theearpiecetowards theproximity sensor. As a result,the dust maymovesaway from the sensorandwith a little lucktheproximity sensorworks properlyagain.

Comments (3)

the sensor on my Note4 was also misbehaving after getting it back from warranty claim. The ADC was showing values of 130+ and got to 110 after swiping my finger firmly over the sensor area. After playing with it for a while I tried to...

Hi there,

the sensor on my Note4 was also misbehaving after getting it back from warranty claim. The ADC was showing values of 130+ and got to 110 after swiping my finger firmly over the sensor area. After playing with it for a while I tried to hardly push front and back side of the phone over the sensor area and suddenly the ADC values got back to normal - ADC max. around 30 and the screen on/off feature started working properly again. I'm convinced it must have been something with proper seating of the mobo within the phone body.

I sent my Note 4 due to warranty for a damage mobo. It came out with that issue ADC sometimes around 60-70 the passing 90 the proximity sensor start not doing its job. I slighly press the screen around it and start working again.

So I did the test and my ADC is running above 90 in the proximity sensor what can I do?? This phone was just replaced a few weeks ago and is a refurbished phone so what can I do to fix it? My screen always stays black after a call has ended and I...

So I did the test and my ADC is running above 90 in the proximity sensor what can I do?? This phone was just replaced a few weeks ago and is a refurbished phone so what can I do to fix it? My screen always stays black after a call has ended and I have to press the home button to get it to come on what can I do?? You can email me at scoucerangel@yahoo.com thanks